Improvement in car-couplings



Llnoenrsou, ir.

Gar-Couplings.'

No. 146,402, Patented VlanLHl, 1874.

f Mn UNITED STATES PATENT GEEICE;

JAMES ROBERTSON, JR., OF EAST CAMBRIDGE, MASSACHUSETTS.

IMPROVEMENT IN CAR-couPrlNes.l

Specification forming part of Letters Patent No. 1,116,402, dat. dJanuary 13, 1874; application filed December 6, 1873.

To all whom t may concern:

Be it known that I, JAMES ROBERTSON, Jr., of East Cambridge, in thecounty of Middlesex and State of Massachusetts, have invented a new andImproved Car-Couplin g, of which the following is a specification:

`The invention will first be fully described, and then pointed out inthe claim.

Figure 1 is a longitudinal sectional elevation of a couple of draw-headsor buers with couplings arranged according to my invention, one sideshowing the link coupled, and the other side showing the action of thecoupling-pin and the lookingpin in coupling. Fig. 2 is a plan of oneside, and horizontal section of the other side of Fig. l.

Similar letters of reference indicate corresponding parts.

y A and B represent the draw-heads; C, the coupling-link; D, thecoupling-pins; E, the locking-pins; F, the levers by which the pins Eare suspended; G, the levers for suspending the coupling-pins; H, chainsfor raising the coupling-pins, and I the slot-holes forthe'coupling-pins and locking pins. The coupling-pin is suspended at thefront end of the slot to draw against the shoulders thereat, and holdthe link when the cars are running. It swings back and strikes thelocking-piu by its lower end before it rises high enough to let the linkpass. At thesame time its lever G strikes lever F, and thus causes thelink to force the pins E up by driving under and against the obliquepins, and which causes such friction on the pin as to gradually arrestits motion and prevent a shock by stopping suddenly. The pin E is partlyraised by the action of the point of the n coupling-pin D on it, andpartly by the upper end of said pin acting on lever F, so that its notchJ rises high enough for the end of the link to enter it the moment thecoupling has risen high enough to drop back into the link, to lock itagainst rising any higher, and causes it to prevent the couplingpin frombeing thrown out by the blow of the link. The coupling-pin then fallsback into the link and completes the coupling, and, as soon as the linkis released from pressure against the locking-pin, the latter falls andtakes up all unnecessary slack between the end of the link and thecoup1ingpin,which, owing to the greater than ordinary depth ot' thesocket for the link to allow of thismode of coupling, would otherwise betoo great. The chain H will be used for pulling out the link foruncoupling the ears.`

Having thus described my invention, I claim as new and desire to secureby Letters Patent- The locking-pin suspended from the lever F, andarranged to check the pin D when thrown up by the link, and also to takeup the slack of the link between the coupling-pin and socket end,substantially as specilied.

JAMES ROBERTSON, JR.

Witnesses:

CHARLES H. BARTLETT, J AMEs ROBERTSON, 2d.

